Air generator for seat by a secondary driver

Abstract

A gas generator for secondary driver of car is composed of a cylindrical barrel and both end covers. Said cylindrical barrel contains an ignition chamber with igniter, base and igniting cup, a combustion chamber with gas generating tablets, elastic disc for fixing said tablets and compressed spring, and a filter chamber. Its advantages are high speed to create initial pressure, stable outlet pressure of combustion chamber, and high filtering effect.

Description

technical field [0001] The invention relates to a co-pilot gas generator for providing inflation in an automobile safety protection buffer system. Background technique [0002] The safety protection buffer system of a car, as shown in Figure 1, generally includes impact sensors, controllers, gas generators, air bags, etc. When the car collides, the sensor measures the inertial acceleration caused by the car collision, and transmits the signal to the controller. The controller judges the magnitude and duration of the collision acceleration. If the magnitude and duration of the acceleration exceed or reach the predetermined limit value, The controller sends an ignition signal to start the gas generator. The gas generator will be activated, and a large amount of gas will be generated to fill the air bag, and the air bag will rapidly inflate and spread out in front of the occupant, thereby avoiding the occupant from colliding with other hard objects of the vehicle due to the in...

AI Technical Summary

Problems solved by technology

But these patents have the following major problems: (1) the above long cylindrical shells, the combustion chambers are all longer, and there are more gas generating agents, and most of them have adopted long ignition tubes, which require more ignition powder when igniting, and The ignition mechanism is complex and the filter screen is thicker, which directly leads to higher cost and difficulty in ensuring reliable high-speed combustion; (2) due to the use of a small ignition area, the high-speed airflow and solid particles generated by combustion will destroy the unburned gas generating agent. The filter screen is clogged on the filter screen, resulting in too high pressure in the combustion chamber, it is difficult to control the outlet pressure, and the time for generating the initial pressure is prolonged; (3) the above-mentioned patents do not provide fixed limits for the internal components of the long cylindrical gas generator structure

Images